JP3951149B2 - Signal light and helicopter landing guidance device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a signal light for supporting the operation of an aircraft, a ship, etc., and more particularly to a helicopter landing guidance device for guiding a helicopter to a temporary landing zone during a rescue operation.
[0002]
[Problems to be solved by the invention]
When a rescue operation is performed using a helicopter, most of the pilots heading to the rescue site are not familiar with the surrounding situation. Therefore, the helicopter must fly along the approach path center line (hereinafter referred to as the approach line) in order to safely lower the aircraft to the landing zone without touching the obstacle. However, it is very difficult to grasp this approach line at night.
[0003]
Therefore, a technique as disclosed in Japanese Utility Model Application No. Sho 62-197098 has been proposed. This is because two ropes with lights attached at predetermined intervals are fixed to the ground along the boundary of the landing zone, and two lights with lights attached at predetermined intervals along the approach line to the landing zone. The ropes are arranged in parallel.
This technology has the feature that it is easy to set up and move the landing zone. However, there is a drawback that it is not suitable for guiding large helicopters. That is, in a small helicopter, the approach angle to the landing zone is as large as 8 to 12 °, and the landing posture is entered from a distance less than 1 km from the landing zone. Therefore, the landing zone and the approach line can be easily recognized, and the landing zone can be safely lowered. On the other hand, in the case of a large helicopter, the approach angle to the landing zone is as small as 4 to 6 °, and the landing posture starts from a point several kilometers away from the landing zone. For this reason, at the time of entering the landing posture, the landing zone can only be seen as a point, and of course the approach line and the approach direction cannot be determined. Therefore, until it is fairly close to the landing zone, it is not known whether the helicopter is flying on the approach line or whether the approach direction is correct.
[0004]
Therefore, the problem to be solved by the present invention is that the pilot can easily recognize the target point, for example, the approach line and the approach direction to the landing zone, and the helicopter is safe to the landing zone regardless of its size, and To provide technology that can be quickly guided.
[0005]
[Means for Solving the Problems]
The above-mentioned problems are the light projecting means,
A light emitting means provided in the vicinity of the light projecting means,
The light projecting means is configured to project light that can be recognized only from a certain limited direction, and to change the direction in which the light is projected at a constant speed,
The light emitting means is configured to emit a flash toward all directions,
The flash is solved by a signal lamp that is emitted when the direction of light from the light projecting means coincides with a predetermined direction.
[0006]
Also, a light projecting means,
A light emitting means provided in the vicinity of the light projecting means,
The light projecting means is configured to project light that can be recognized only from a certain limited direction in two opposite directions, and the direction in which the light is projected changes at a constant speed.
The light emitting means is configured to emit a flash toward all directions,
The flash is solved by a signal lamp that is emitted when the direction of light from the light projecting means coincides with a predetermined direction.
[0007]
A first light projecting means;
A second light projecting means provided in the vicinity of the first light projecting means,
The first light projecting means is configured to project light that can be recognized only from a certain limited direction in two opposite directions, and the direction in which the light is projected changes at a constant speed,
The second light projecting unit projects light that can be recognized only from a certain limited direction in one direction, and the direction in which the light is projected changes at twice the speed of the first light projecting unit. Configured as
The second light projecting means projects light in the same direction as the predetermined direction when the direction of light from the first light projecting means coincides with the predetermined direction. Solved by signal lights.
[0008]
Furthermore, a first light projecting means,
A second light projecting means provided in the vicinity of the first light projecting means,
The first light projecting means is configured to project light that can be recognized only from a certain limited direction, and to change the direction in which the light is projected at a constant speed,
The second light projecting unit projects light that can be recognized only from a certain limited direction in one direction, and the direction in which the light is projected is the same speed as the first light projecting unit, and the reverse direction. Configured to change to
The second light projecting means projects light in the same direction as the predetermined direction when the direction of light from the first light projecting means coincides with the predetermined direction. Solved by signal lights.
[0009]
In addition, the above problem is a device for guiding the helicopter to the landing zone,
A light projecting means provided in the vicinity of the landing zone;
A light emitting means provided in the vicinity of the light projecting means,
The light projecting means is configured to project light that can be recognized only from a certain limited direction, and to change the direction in which the light is projected at a constant speed,
The light emitting means is configured to emit a flash toward all directions,
The flash is solved by a helicopter landing guidance device characterized in that it is emitted when the direction of light from the light projecting means coincides with the approach direction of the helicopter.
[0010]
Alternatively, a device for guiding the helicopter to the landing zone,
A light projecting means provided in the vicinity of the landing zone;
A light emitting means provided in the vicinity of the light projecting means,
The light projecting means is configured to project light that can be recognized only from a certain limited direction in two opposite directions, and the direction in which the light is projected changes at a constant speed.
The light emitting means is configured to emit a flash toward all directions,
The flash is solved by a helicopter landing guidance apparatus characterized in that it is emitted when the direction of light from the light projecting means coincides with the approach line of the helicopter.
[0011]
Also, a device for guiding the helicopter to the landing zone,
First light projecting means provided in the vicinity of the landing zone;
A second light projecting means provided in the vicinity of the first light projecting means,
The first light projecting means is configured to project light that can be recognized only from a certain limited direction in two opposite directions, and the direction in which the light is projected changes at a constant speed,
The second light projecting unit projects light that can be recognized only from a certain limited direction in one direction, and the direction in which the light is projected changes at twice the speed of the first light projecting unit. Configured as
The second light projecting means projects light in the same direction as the first light projecting means when the direction of light from the first light projecting means coincides with the approach direction of the helicopter. This is solved by a helicopter landing guidance device.
[0012]
Furthermore, a device for guiding the helicopter to the landing zone,
First light projecting means provided in the vicinity of the landing zone;
A second light projecting means provided in the vicinity of the first light projecting means,
The first light projecting means is configured to project light that can be recognized only from a certain limited direction, and to change the direction in which the light is projected at a constant speed,
The second light projecting unit projects light that can be recognized only from a certain limited direction in one direction, and the direction in which the light is projected is the same speed as the first light projecting unit, and the reverse direction. Configured to change to
The second light projecting means projects light in the same direction as the first light projecting means when the direction of the light from the first light projecting means coincides with the entry line of the helicopter. This is solved by a helicopter landing guidance device.
[0013]
In the above helicopter landing guidance apparatus, the light emitting means provided with the light projecting means and the light emitting means may be used as the light emitting means provided around the landing zone for displaying the position of the landing zone. it can.
As described above, the signal lamp of the present invention, that is, the helicopter landing guiding device, is provided with the light emitting means and the light projecting means, for example, in the vicinity of the landing zone, and emits flash light from the light emitting means in a fixed cycle in all directions, and the light projecting means Is designed to project spot-like light with a limited recognizable direction. The light emitting means is activated when the center line of the light projected from the light projecting means overlaps the helicopter entry line, that is, at the moment when the optical axis of the light projecting means coincides with the entry line. Therefore, if the pilot recognizes two lights simultaneously, it can be seen that the helicopter is approaching the landing zone while flying on the approach line. Also, after recognizing the flashlight from the light emitting means, knowing how much time has passed to see the light from the light projecting means, or conversely, after recognizing the light from the light projecting means, how much By knowing whether the flashing light has been emitted from the light emitting means after the elapse of time, the pilot can specify the position of the helicopter with respect to the landing zone. In this case, it suffices to move the helicopter to a point where the light emitting means and the light projecting means appear to emit light at the same time, which makes it possible to easily locate the helicopter on the approach line even at night. Become. If the helicopter reaches the approach line, the helicopter can be landed safely and quickly by lowering it to the landing zone while maintaining a predetermined approach angle. In addition, since the light from the light emitting means and the light projecting means can be easily recognized even from a very long distance, even if the helicopter is large, it can be handled without any problems.
[0014]
Further, an apparatus combining two light projecting means is the same as the case using the light emitting means and the light projecting means. In other words, it is only necessary to move the helicopter to a point where the light projected from both can be seen at the same time, so that the aircraft can be surely positioned on the approach line, and safe and quick landing is possible. Become.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The signal lamp described as the first embodiment of the present invention includes a light projecting unit and a light emitting unit provided in the vicinity of the light projecting unit, and the light projecting unit can be recognized only from a certain limited direction. The light is projected, and the direction in which the light is projected is configured to rotate at a constant speed, and the light emitting means is configured to emit flash light in all directions, and further The flash is emitted when the direction of light from the light projecting means coincides with a predetermined direction. In particular, the signal lamp used for guiding the helicopter to the landing zone, that is, the helicopter landing guidance device includes a light projecting means provided in the vicinity of the landing zone and a light emission provided in the vicinity of the light projecting means. The light projecting means is configured to project light that can be recognized only from a limited direction, and to rotate and change the direction in which the light is projected at a constant speed. The light emitting means is configured to emit flash light in all directions, and the flash light is emitted when the direction of light from the light projecting means coincides with the entry direction of the helicopter. .
[0016]
The helicopter landing guidance device of the present embodiment is configured such that the former emits green light and the latter emits red light so that the light from the light emitting means and the light from the light projecting means can be easily distinguished. Has been.
Hereinafter, the signal lamp of the first embodiment, that is, the helicopter landing guidance apparatus will be specifically described with reference to FIG.
[0017]
The helicopter landing guidance device of the first embodiment is used when landing is possible only from one direction along the approach line to the landing zone.
The helicopter landing guidance apparatus generally includes a main body 1, a light emitting unit 2, and a light projecting unit 3. In particular, the light emitting unit 2 and the light projecting unit 3 are stacked one above the other as can be seen from FIG.
[0018]
The main body 1 mainly includes a battery and a control circuit, and a total of six legs 4 are provided on the bottom surface at 60 ° intervals.
The light emitting unit 2 includes a reflector 5 having a drum-shaped outer peripheral surface and a ring-shaped arc tube 6 that takes in the reflector 5. The reflector 5 and the arc tube 6 are covered with a green transparent cylindrical cover 7 so that the green flash emitted from the light emitting unit 2 can be recognized from all directions.
[0019]
The light projecting unit 3 includes a cup-shaped reflecting plate 8, a bulb 9, and a red transparent cover 10 covering these. The bulb 9 is fixed to the bottom plate 11, but the reflecting plate 8 is not fixed thereto, and can rotate around the bulb 9 at a constant speed. A drive mechanism for rotating the reflecting plate 8 exists inside the reflector 5.
The red light emitted from the light projecting unit 3 becomes spot-like due to the action of the reflecting plate 8. That is, the pilot can recognize the projection light only when the helicopter exists in a limited direction. In addition, since the reflecting plate 8 rotates at a constant speed, even if the bulb 9 is always lit, it looks to the pilot as if the light projecting unit 3 intermittently projects red light.
[0020]
In the helicopter landing guidance device, the reflector 8 rotates once per second. And the light emission part 2 act | operates at the moment when the center line and the approach line of the projection light from the light projection part 3 overlap, ie, the moment when the optical axis of the projection light and the approach line correspond. In addition, although an optical axis and an approach line correspond twice in 1 second, the light emission part 2 operate | moves only about one of them. That is, light is emitted only when the reflector 8 faces the helicopter facing the landing zone from the normal direction.
[0021]
Next, a helicopter landing guidance method using the helicopter landing guidance device will be described with reference to FIGS. 2 and 3. 2 is a perspective three-dimensional view showing a state in which the boundary light and the helicopter landing guidance device are arranged around the landing zone. FIG. 3 is a diagram illustrating the distance between the two lights emitted from the helicopter landing guidance device and the position of the helicopter with respect to the landing zone. It is a table | surface which shows these relationships. However, in FIG. 3 (the same applies to FIGS. 5, 7, and 9), the arrow indicates the light projecting direction. For example, an arrow pointing directly above means projected light that can be recognized only by a pilot of a helicopter that is relative (facing) in a normal direction to the landing zone. The left and right arrows mean projected light that can be recognized only by a helicopter pilot facing the landing zone from the side. ☆ indicates that the pilot has recognized green light from the light emitting unit (or the first light projecting unit), and ★ indicates that the pilot has recognized red light from the light projecting unit (or the second light projecting unit). Means that. Furthermore, ◎ means that the pilot recognized green light and red light at the same time.
[0022]
Now, helicopter landing guidance to the landing zone is performed as follows.
First, as a preparation for landing guidance, boundary lights A are arranged at the four corners of the landing zone (shown by broken lines in FIG. 2). Further, the helicopter landing guidance device B is arranged on the approach line (indicated by a one-dot chain line in FIG. 2).
As shown in FIG. 2, when the arrangement of the boundary light A and the helicopter landing guidance device B is completed, the boundary light A is turned on to display the landing zone area on the helicopter. At the same time, the helicopter landing guidance device B is operated to display the approximate position of the landing zone to the pilot and to transmit the angle formed by the aircraft and the approach line to the landing zone.
[0023]
It is assumed that the pilot simultaneously recognizes red light and green light from a certain point in the sky under the situation where the helicopter landing guidance device B is operating in this manner. In that case, as can be seen from FIG. 3, the helicopter exists on the approach line and is opposed to the landing zone from the normal direction. That is, it faces the landing zone. Therefore, if it descends at a predetermined approach angle as it is, it can land safely without touching an obstacle.
[0024]
On the other hand, if the red light is recognized after 0.5 seconds have elapsed after the green light is seen, the helicopter is present on the approach line, but the landing zone from the direction opposite to the normal direction. Relative to Alternatively, when the red light is recognized after 0.25 seconds have passed after the green light is seen, the helicopter is opposed to the landing zone from the side. In other words, the aircraft is on a line orthogonal to the approach line, and the point where the aircraft should be ready for landing is on the pilot's right hand side. In such a state, since the helicopter cannot be lowered to the landing zone as it is, the helicopter is moved to a position where the red light and the green light can be seen simultaneously. When the helicopter is moved to a certain position and the pilot can recognize the red light and the green light at the same time, the helicopter is on the approach line and faces the landing zone. Therefore, it is only necessary to descend at the predetermined approach angle.
[0025]
Thus, by using the helicopter landing guidance device, the pilot can easily grasp the approach line and the approach direction to the landing zone. In addition, the red light and green light emitted by the helicopter landing guidance device can be clearly recognized even from a considerable distance. Therefore, regardless of whether the helicopter is large or small, in other words, regardless of whether the point entering the landing posture is far from or near the landing zone, the helicopter can be reliably guided to the landing zone.
[0026]
Next, a second embodiment of the present invention will be described.
Here, the signal lamp mentioned as the second embodiment includes a light projecting unit and a light emitting unit provided in the vicinity of the light projecting unit, and the light projecting unit receives light that can be recognized only from a certain limited direction. Projecting in two opposite directions, and the light projecting direction is configured to rotate and change at a constant speed, and the light emitting means is configured to emit flash light in all directions. Further, the flash is emitted when the direction of light from the light projecting means coincides with a predetermined direction. In particular, the signal light used for guiding the helicopter to the landing zone, that is, the helicopter landing guidance device includes a light projecting means provided in the vicinity of the landing zone and a light emission provided in the vicinity of the light projecting means. The light projecting means is configured to project light that can be recognized only from a limited direction in two opposite directions, and the direction in which the light is projected rotates and changes at a constant speed. The light emitting means is configured to emit a flash in all directions, and the flash is emitted when the direction of the light from the light projecting means coincides with the entry line of the helicopter. It has become.
[0027]
In the second embodiment, the light emitting means emits green light and the light projecting means emits red light.
Hereinafter, the signal lamp of the second embodiment, that is, the helicopter landing guidance apparatus will be described in detail with reference to FIG. However, since the configurations of the main body 21 and the light emitting unit 22 are the same as those of the first embodiment, description thereof will be omitted.
[0028]
The helicopter landing guidance apparatus of the second embodiment is used when landing can be performed from any direction before and after the landing zone as long as the helicopter landing guidance device descends on the approach line to the landing zone. The main feature is having an optical axis. That is, the light projecting unit 23 provided on the light emitting unit 22 is configured to project spot-like light simultaneously in two opposite directions.
[0029]
The light projecting unit 23 includes a substantially drum-shaped reflecting tube 24, a bulb 25 existing at the center of the reflecting tube 24, and a red transparent cover 26 covering these.
The bulb 25 is fixed to the bottom plate 27, but the reflection tube 24 is not fixed thereto, and can rotate around the bulb 25. A driving mechanism for rotating the reflecting cylinder 24 is housed inside the reflector of the light emitting unit 22.
[0030]
In the present embodiment, the bulb 25 is always turned on so that the reflecting cylinder 24 rotates once per second. Furthermore, it set so that the light emission part 22 might act | operate at the moment when the light was projected in the direction along the approach line from the light projection part 23. FIG. Therefore, the light emitting unit 22 emits light twice while the reflecting tube 24 of the light projecting unit 23 rotates once.
When the helicopter landing guidance apparatus of the second embodiment is used, if the green light and the red light can be recognized simultaneously, the helicopter exists on the approach line as can be seen from FIG. On the other hand, for example, if the red light is emitted after 0.25 seconds have elapsed after the green light is seen, it can be understood that the helicopter exists on the line orthogonal to the entry line to the landing zone.
[0031]
Subsequently, a third embodiment of the present invention will be described.
The signal lamp according to the third embodiment includes a first light projecting unit and a second light projecting unit provided in the vicinity of the first light projecting unit. The second light projecting means is configured to project light that can be recognized only from a certain limited direction in two opposite directions, and to rotate and change the light projecting direction at a constant speed. Is configured to project light that can be recognized only from a certain limited direction in one direction, and the direction in which the light is projected rotates at twice the speed of the first light projecting means, Further, the second light projecting means projects light in the same direction as the predetermined direction when the direction of the light from the first light projecting means coincides with the predetermined direction. In particular, in this signal light, the one used for guiding the helicopter to the landing zone, that is, the helicopter landing guidance device includes a first light projecting means provided in the vicinity of the landing zone, and the first light projecting means. The first light projecting means projects light that can be recognized only from a certain limited direction in two opposite directions, and projects light. The second light projecting means projects light that can be recognized only from a certain limited direction in one direction, and projects the light. And the second light projecting unit is configured so that the direction of light from the first light projecting unit is the same as the direction of the light. Same as the first light projecting means when it coincides with the approach direction of the helicopter It is adapted to project light onto. In the third embodiment, the first light projecting means emits red light and the second light projecting means emits green light.
[0032]
Hereinafter, the signal lamp of the third embodiment, that is, the helicopter landing guidance apparatus will be described in detail with reference to FIG.
The helicopter landing guidance apparatus of the third embodiment is used when landing is possible only from one direction along the approach line to the landing zone, as in the first embodiment.
This helicopter landing guidance device is characterized by having two light projecting units. That is, it generally comprises a main body portion 31, a first light projecting portion 32 and a second light projecting portion 33.
[0033]
The main body 31 has basically the same configuration as that of the first embodiment shown in FIG. 1, but differs in that a drive mechanism for rotating a reflecting plate of a second light projecting unit 33 described later is incorporated. .
The structure of the 2nd light projection part 33 is as substantially the same as the light projection part 3 of 1st Embodiment shown in FIG. That is, a bulb 34 fixed to the top plate of the main body 31, a reflection plate 35 that rotates around the bulb 34, and a green transparent cover 36 that covers them are provided. The reflector 35 is rotated by a drive mechanism built in the main body 31.
[0034]
The structure of the 1st light projection part 32 is as substantially the same as the light projection part 23 of 2nd Embodiment shown in FIG. That is, a bulb 38 fixed to the pedestal 37, a reflecting cylinder 39 that rotates around the bulb 38, and a red transparent cover 40 that covers them are provided. The reflecting cylinder 39 is rotated by a drive mechanism built in the pedestal 37.
Then, the reflecting plate 35 in the second light projecting unit 33 is set to rotate once per second, and the reflecting tube 39 in the first light projecting unit 32 is set to be half the speed of the reflecting plate 35, that is, set to rotate once every two seconds. is doing. In other words, in the second light projecting unit 33, the light projecting direction changes at twice the speed of the first light projecting unit 32. Moreover, the 1st light projection part 32 and the 2nd light projection part 33 operate | move from the state with which the optical axis corresponded.
[0035]
When this helicopter landing guidance device is used, for example, if green light and red light are seen simultaneously, it can be seen that the helicopter is on the approach line and is directly facing the landing zone, as shown in FIG. If the situation is repeated so that the red light can be seen after 0.5 seconds have passed since the green light is seen, the helicopter is on the approach line but is opposite to the normal direction with respect to the landing zone. It can be seen from the direction of. Alternatively, when red light is recognized after 0.25 seconds have elapsed after the green light is seen, it can be seen that the helicopter is directly opposite the landing zone.
[0036]
Next, a fourth embodiment of the present invention will be described.
The signal lamp mentioned here as the fourth embodiment includes a first light projecting unit and a second light projecting unit provided in the vicinity of the first light projecting unit, and the first light projecting unit. Is configured to project light that can be recognized only from a certain limited direction, and to rotate and change the light projecting direction at a constant speed, and the second light projecting means includes The light that can be recognized only from a limited direction is projected in one direction, and the direction in which the light is projected is configured to rotate and change in the reverse direction at the same speed as the first light projecting means, Further, the second light projecting means projects light in the same direction as the predetermined direction when the direction of the light from the first light projecting means coincides with the predetermined direction. In particular, the signal light used for guiding the helicopter to the landing zone, that is, the helicopter landing guidance device, the first light projecting means provided in the vicinity of the landing zone, and the first light projecting means 2nd light projecting means provided near the first light projecting means, the first light projecting means projects light that can be recognized only from a certain limited direction, and the direction in which the light is projected is constant. The second light projecting unit projects light that can be recognized only from a certain limited direction in one direction, and the direction in which the light is projected is configured so that the second light projecting unit is configured to rotate and change at a speed. The second light projecting unit is configured to rotate and change in the reverse direction at the same speed as the first light projecting unit, and the second light projecting unit has a light direction from the first light projecting unit of the helicopter. The first light projecting means when matched with the approach line; It adapted to project light in a direction. In the fourth embodiment, the first light projecting unit emits green light, and the second light projecting unit emits red light.
[0037]
Hereinafter, the signal lamp of the fourth embodiment, that is, the helicopter landing guidance apparatus will be specifically described with reference to FIG.
As with the second embodiment, the helicopter landing guidance apparatus of the fourth embodiment is used when landing can be performed from any direction before and after the landing zone as long as it descends on the approach line to the landing zone. .
[0038]
The helicopter landing guidance device generally includes a main body 41, a first light projecting unit 42, and a second light projecting unit 43.
The main body 41 has the same configuration as that of the first embodiment shown in FIG. 1, and in addition to the battery and the control circuit, there is a drive mechanism for rotating a reflector of the second light projecting unit 43 described later. Is provided.
[0039]
The structure of the second light projecting unit 43 is also substantially the same as the light projecting unit 3 of the first embodiment shown in FIG. 1, and the valve 44 fixed to the top plate of the main body 41 and the periphery of the valve 44 rotate. And a green transparent cover 46 covering these.
The first light projecting unit 42 is basically the same structure as the second light projecting unit 43, and includes a bulb 48 fixed to the pedestal 47, a reflecting plate 49 that rotates around the bulb 48, and a red color that covers them. And a transparent cover 50. The reflection tube 49 is rotated by a drive mechanism built in the pedestal 47.
[0040]
That is, the helicopter landing guide apparatus of the fourth embodiment has a structure in which the single-optical axis type light projecting units in the first embodiment and the third embodiment are stacked.
Then, the reflecting plate 45 in the second light projecting unit 43 rotates once per second, and the reflecting plate 49 in the first light projecting unit 42 rotates at the same speed in the direction opposite to the rotating direction of the reflecting plate 45. It is set.
[0041]
When this helicopter landing guidance apparatus is used, if green light and red light are seen simultaneously, it can be seen that the helicopter is on the approach line as shown in FIG. Alternatively, when the situation in which red light can be visually recognized after 0.5 seconds have elapsed after the green light is visually recognized, it can be seen that the helicopter is directly opposite the landing zone.
In the first to fourth embodiments, the helicopter landing guidance device in which the light projecting means (or the first light projecting means) and the light emitting means (or the second light projecting means) are stacked vertically is taken as an example. It was. However, the present invention is not limited to this form, and the light projecting means (or the first light projecting means) and the light emitting means (or the second light projecting means) are made independent from each other with a certain distance therebetween. It may be arranged near the landing zone.
[0042]
In particular, in the helicopter landing guidance apparatus provided with the light projecting means and the light emitting means, the latter can be substituted with the light emitting means provided around the landing zone for displaying the position of the landing zone. Hereinafter, this embodiment (fifth embodiment) will be described with reference to FIGS. 10 and 11. 10 is a perspective three-dimensional view of the light projecting body (light projecting means), and FIG. 11 is a perspective three-dimensional view of the light emitting body (light emitting means).
[0043]
As can be seen from FIG. 10, the light projecting body has a structure in which the light emitting unit is removed from the helicopter landing guidance device of the first embodiment, that is, includes a main body 51 and a light projecting unit 52. The main body 51 incorporates a battery and a control circuit. The light projecting unit 52 includes a cup-shaped reflecting plate 53, a bulb 54, a cover 55 covering these, and the like. Although the bulb 54 is fixed to the top plate 56 of the main body 51, the reflecting plate 53 is not fixed to the top plate 56 and can rotate around the bulb 54 at a constant speed. A drive mechanism for rotating the reflecting plate 53 exists inside the main body 51.
[0044]
On the other hand, as can be seen from FIG. 11, the light emitter has a structure in which the light projecting unit is removed from the helicopter landing guidance device of the first embodiment, that is, includes a main body 57 and a light emitting unit 58. The main body 57 incorporates a battery and a control circuit, similar to the projector. The light emitting unit 58 includes a reflector 59 having a drum-shaped outer peripheral surface, a ring-shaped arc tube 60 that takes in the reflector 59, and a cover 61 that covers them.
[0045]
Helicopter landing guidance by the helicopter landing guidance apparatus provided with the light projecting body and the light emitting body is performed as follows.
First, the light projecting body and the light emitting body are arranged in the vicinity of the landing zone at a certain interval. For example, the projector is arranged on the approach line as in the helicopter landing guidance device in the first embodiment. In this case, what is indicated by B in FIG. On the other hand, regarding the illuminant, since it also serves as a boundary light for displaying the position of the landing zone, it is arranged on the boundary line of the landing zone. That is, one of those indicated by A in FIG. 2 is a light emitter that exhibits a landing guiding function in cooperation with the light projecting body.
[0046]
When the arrangement of the light projecting body and the light emitting body is completed, these are subsequently operated in cooperation. That is, when the direction of the light from the light projecting body coincides with the approach direction of the helicopter, the light emitting body is operated so as to emit a flash. Also, the boundary lamp is turned on at the same timing as the light emitter, and the landing zone area is displayed on the helicopter.
The subsequent steps are basically the same as in the first embodiment. The pilot moves the helicopter to a position where the light from the light projecting body and the light from the light emitting body can be seen at the same time, and then enters the landing posture. This allows the helicopter to land safely.
[0047]
【The invention's effect】
According to the present invention, the pilot can easily recognize the target point, for example, the approach line and the approach direction to the landing zone, and can safely and promptly guide the helicopter to the target point regardless of its size. Is possible.
[Brief description of the drawings]
FIG. 1 is a perspective three-dimensional view of a helicopter landing guidance device (first embodiment).
FIG. 2 is a perspective three-dimensional view showing a state in which boundary lights and helicopter landing guidance devices (first embodiment) are arranged around a landing zone.
FIG. 3 is a table showing the relationship between the distance between two lights emitted from the helicopter landing guidance device (first embodiment) and the position of the helicopter with respect to the landing zone.
FIG. 4 is a perspective three-dimensional view of a helicopter landing guidance device (second embodiment).
FIG. 5 is a table showing the relationship between the distance between two lights emitted from the helicopter landing guidance device (second embodiment) and the position of the helicopter with respect to the landing zone.
FIG. 6 is a perspective three-dimensional view of a helicopter landing guidance device (third embodiment).
FIG. 7 is a table showing the relationship between the distance between two lights emitted from a helicopter landing guidance device (third embodiment) and the position of the helicopter with respect to the landing zone.
FIG. 8 is a perspective three-dimensional view of a helicopter landing guidance device (fourth embodiment).
FIG. 9 is a table showing the relationship between the distance between two lights emitted from the helicopter landing guidance device (fourth embodiment) and the position of the helicopter with respect to the landing zone.
FIG. 10 is a perspective three-dimensional view of a light projecting body in a helicopter landing guidance apparatus (fifth embodiment).
FIG. 11 is a perspective three-dimensional view of a light emitter in a helicopter landing guidance apparatus (fifth embodiment).
[Explanation of symbols]
1 Body
2 Light emitting part
3 floodlight
4 legs
5 Reflectors
6 arc tube
7 Cover
8 Reflector
9 Valve
10 Cover
A Boundary light
B Helicopter landing guidance device

Claims (2)

A device for guiding a helicopter to the landing zone,
First light projecting means provided in the vicinity of the landing zone ;
A second light projecting means provided in the vicinity of the first light projecting means ,
The first light projecting means is configured to project light that can be recognized only from a certain limited direction in two opposite directions , and the direction in which the light is projected changes at a constant speed,
The second light projecting unit projects light that can be recognized only from a certain limited direction in one direction, and the direction in which the light is projected changes at twice the speed of the first light projecting unit. Configured as
The second light projecting means projects light in the same direction as the first light projecting means when the direction of light from the first light projecting means coincides with the approach direction of the helicopter . A helicopter landing guidance device characterized by that. A device for guiding a helicopter to the landing zone,
First light projecting means provided in the vicinity of the landing zone ;
A second light projecting means provided in the vicinity of the first light projecting means ,
The first light projecting means is configured to project light that can be recognized only from a certain limited direction, and to change the direction in which the light is projected at a constant speed,
The second light projecting unit projects light that can be recognized only from a certain limited direction in one direction, and the direction in which the light is projected is the same speed as the first light projecting unit, and the reverse direction. Configured to change to
The second light projecting means projects light in the same direction as the first light projecting means when the direction of the light from the first light projecting means coincides with the entry line of the helicopter . A helicopter landing guidance device characterized by that.

Images